Now we want to use the new installed apps in QGis. In order to add any OTB app which is not in QGis (e.g. remote module app) you just have to add a .xml file in the /usr/share/qgis/python/plugins/processing/algs/otb/description/5.XXX/ folder (replace XXX by the version).
Here are examples of .xml files for some remote modules :

We noted that in some cases libgeotiff and libtiff are not installed so this configuration may generate a Gdal/geotiff conflict.
make sure that you have those two libraries in usr/lib before configuration , if not you have to download and put there.

Build and install

make
make install

Installing QGis

For now on, we need to make sure this GDAL build will be selected by the QGis and OTB configuration process: